1/72+1/72+6/8+1/9+1/9=
(5x- y) (2x + 1)- 2x-1
In the subtraction sum on the right a, b and c are digits, and a is less than b.
What is the value of c?
b a
- a b
c 6
1/72+1/72+6/8=
790019
3392110
2764070
1392723
6784220
5528140
30152860
33847540
6303104
12617841
11922701
sequence -8.6, -3.6, 1.4
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